In these research challenges, you will answer questions that really matter to
astronomers. You figure out how to answer the question, collect data with
SkyServer tools, interpret the data, and understand the universe.

Some galaxies are spirals, and some are ellipticals. Sometimes, it's easy to tell
which is which. But when a galaxy is very small, you can't recognize its shape. Can
you still tell whether it is spiral or elliptical based on observations of the galaxy?

Find HII regions, the areas of glowing gas in other
galaxies where stars are born. As you find them, you'll help the
SDSS improve its photo processing software, which mistakes these
regions for separate galaxies.